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JJ Electronics (12AY7)12AY7 is a medium gain pre-amplifying double triodeFeatures of JJ Electronics (12AY7) The JJ Electronic 12AY7 is a low microphonic tube built in the same rugged fashion as all JJ preamp tubes This tube offers the classic warm 12AY7 sound with rich and balanced harmonics when pushed enough to break up ItAs a great choice for au..